108421178 has 4 divisors (see below), whose sum is σ = 162631770. Its totient is φ = 54210588.

The previous prime is 108421139. The next prime is 108421213. The reversal of 108421178 is 871124801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95511529 + 12909649 = 9773^2 + 3593^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27105293 + ... + 27105296.

Almost surely, 2^108421178 is an apocalyptic number.

108421178 is a deficient number, since it is larger than the sum of its proper divisors (54210592).

108421178 is an equidigital number, since it uses as much as digits as its factorization.

108421178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54210591.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 108421178 is about 10412.5490635099. The cubic root of 108421178 is about 476.8385666755.

Adding to 108421178 its reverse (871124801), we get a palindrome (979545979).

The spelling of 108421178 in words is "one hundred eight million, four hundred twenty-one thousand, one hundred seventy-eight".